The Radar: 10 Things to Do in Hong Kong, Green Sidewalks, Haunted Hotels

• Ride the iconic Star Ferry, visit Aberdeen or try another one of these 10 Hong Kong must-dos. [Velvet Escape]

• London’s 2012 Olympic site will be powered by foot. Pavement slabs or “PaveGen” made from recycled rubber convert people’s footsteps into energy. In PaveGen’s first commercial use, 20 tiles will be scattered between London’s Olympic Stadium and the new Westfield Stratford City mall. [CNN]

• Check into one of these haunted hotels for a spooky stay on Halloween night. [USAToday]

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Photo: Y Y Yu/My Shot